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Research Article Video Transcoder in DCT-Domain Spatial Resolution Reduction Using Low-Complexity Motion Vector
It becomes more important to obtain medical ultrasound images with higher signal-to-noise ratio (SNR) and higher spatial resolution. In the last decade, tissue harmonic imaging (THI) and coded excitation to medical ultrasound imaging have been investigated.
Digital Image Processing: Human Visual System - Duong Anh Duc presents about Human Visual System; Cross-section of the Human Eye; Light and EM Spectrum; Image Sensing and Acquisition; Mathematical Representation of Images; Effect of spatial resolution; Application Areas.
(BQ) Part 2 book "MRI at a glance" presentation of content: Data acquisition and scan time, signal to noise ratio, spatial resolution, magnetic susceptibility, flow phenomena, phase contrast MR angiography, phase contrast MR angiography, contrast enhanced MR angiography, screening and safety procedures,...
Since its first implementation by Lauterbur , Magnetic Resonance
Imaging (MRI) has become an important noninvasive imaging
modality. MRI has found a number of applications in the fields of
biology, engineering, and material science. Because it provides unique
contrast between soft tissues (which is generally superior to that of
CT) and high spatial resolution, MRI has revolutionized diagnostic
imaging in medical science. An important advantage of diagnostic MRI
as compared to CT is that the former does not use ionizing radiation....
The evolution of technological advances in infrared sensor technology, image processing, “smart”
algorithms, knowledge-based databases, and their overall system integration has resulted in new methods
of research and use in medical infrared imaging. The development of infrared cameras with focal
plane arrays not requiring cooling added a new dimension to this modality. New detector materials
with improved thermal sensitivity are now available and production of high-density focal plane arrays
(640×480) has been achieved.
Aquatic scientists have always been intrigued with concepts of scale. This interest perhaps stems from
the nature of ßuid dynamics in oceans and lakes energy cascades from spatial scales of kilometers
down to viscous scales at centimeters or less. Turbulent processes affect not only an organisms perception
of, and response to, the physical environment, but also the interaction between species, both within and
across trophic levels.
Medina et al. Nanoscale Research Letters 2011, 6:369 http://www.nanoscalereslett.com/content/6/1/369
Hyperspectral optical imaging of two different species of lepidoptera
José Manuel Medina1*, Sérgio Miguel Cardoso Nascimento1 and Pete Vukusic2
Abstract In this article, we report a hyperspectral optical imaging application for measurement of the reflectance spectra of photonic structures that produce structural colors with high spatial resolution.
These disorders are caused by maturational white matter abnormalities and therefore
white matter tractography (using DTI) can offer advantages over conventional MRI in
the detectability of clinically relevant microstructural features. High field strength
structural MR scanning (up to 7 tesla for clinical and research use in humans) is now
available in some countries, and this greatly enhances the spatial resolution over that
offered by standard clinical facilities (typically 1.5 or 3 tesla).
In our quest to elucidate the origin of the universe and the formation of
galaxies, particularly that of the Milky Way in which we live, astounding
progress has been made in recent years through observational and theoretical
studies. Not only have gigantic surveys covering a large fraction of the sky
brought statistics enlightening evolutionary paths of galaxies, but powerful
instruments, such as radio interferometers and ground- and space-based optical/
infrared telescopes, have been able to map individual objects with high
sensitivity and spatial resolution.
We live in a time when digital information plays a key role in various fields. Whether we
look towards communications, industry, medicine, scientific research or entertainment,
we find digital images to be heavily employed. The high volume of stored and
transacted digital images, together with the increasing availability of advanced digital
image acquisition and display techniques and devices, came with a growing need for
novel, fast and intelligent algorithms for the digital manipulation of digital images....
Velocity encoded phase-contrast magnetic resonance imaging (VE-PC MRI) is another
imaging technique used to noninvasively measure Achilles tendon strain and changes in its
force-displacement relationship concomitant with chronic unloading and subsequent
recuperation. This technique will be reviewed in terms of its ability to quantify the Achilles
tendon Young’s modulus (MPa) from a stress-strain curve.
This dissertation will outline solution processable materials and fabrication techniques to
manufacture flexible electronic devices from them. Conductive ink formulations and
inkjet printing of gold and silver on plastic substrates were examined. Line patterning and
mask printing methods were also investigated as a means of selective metal deposition on
various flexible substrate materials. These solution-based manufacturing methods
provided deposition of silver, gold and copper with a controlled spatial resolution and a
very high electrical conductivity.
The invention of scanning tunneling microscope (STM) by Binnig and his colleagues in
1982 opened up the possibility of imaging material surfaces with spatial resolution much
superior to the conventional microscopy techniques. The STM is the first instrument
capable of directly obtaining three-dimensional images of solid surfaces with atomic
resolution. Even though STM is capable of achieving atomic resolution, it can only be
used on electrical conductors. This limitation has led to the invention of atomic force
microscope (AFM) by Binnig and his co-workers in 1986.
The cones function under daylight (photopic) conditions. The cone system is specialized for color perception and high spatial resolution. The majority of cones are located within the macula, the portion of the retina serving the central 10° of vision. In the middle of the macula a small pit termed the fovea, packed exclusively with cones, provides best visual acuity. Photoreceptors hyperpolarize in response to light, activating bipolar, amacrine, and horizontal cells in the inner nuclear layer. ...
All higher organisms divide major biochemical steps into
different cellular compartments and often use tissue-specific
division of metabolism for the same purpose.Such spatial
resolution is accompanied with temporal changes of meta-bolite synthesis in response to environmental stimuli or
developmental needs.Although analyses of primary and
secondary gene products, i.e. transcripts, proteins, and
metabolites, regularly do not cope with this spatial
and temporal resolution, these gene products are often
observed to be highly coregulated forming complex
It is an exciting time for the discipline of cognitive
neuroscience. In the past 10 years we have
witnessed an explosion in the development and
advancement of methods that allow us to precisely
examine the neural mechanisms underlying cognitive
processes. Functional magnetic resonance
imaging, for example, has provided markedly improved
spatial and temporal resolution of brain
structure and function, which has led to answers to
new questions, and the reexamination of old questions.
Estimating the directions of arrival (DOAs) of propagating planewaves is a requirement ina variety of
applications including radar, mobile communications, sonar, and seismology. Due to its simplicity
and high-resolution capability, ESPRIT (Estimation of Signal Parameters via Rotational Invariance
Techniques)  has become one of the most popular signal subspace-basedDOAor spatial frequency
estimation schemes. ESPRIT is explicitly premised on a point source model for the sources and
is restricted to use with array geometries that exhibit so-called invariances ....
The recent introduction of Multidetector Computed
Tomography (MDCT) represents a milestone
in the evolution of Computed Tomography,
that started in the decade of 1970. Faster
velocities of acquisition, higher spatial and temporal
resolution, and better image quality are
advantages of MDCT over the former singleslice
systems that allow the development of
cardiac applications on a realistic basis.